In the months since Edward Snowden revealed the nature and extent of the spying that the National Security Agency (NSA) has been perpetrating upon Americans and foreigners, some of the NSA’s most troublesome behavior has not been a part of the public debate.

This behavior constitutes the government’s assaults on the American legal system. Those assaults have been conducted thus far on two fronts, one of which is aimed at lawyers who represent foreign entities here in America, and the other is aimed at lawyers who represent criminal defendants against whom evidence has been obtained unlawfully and presented in court untruthfully.

Investigative reporters at The New York Times recently discovered that the NSA has been listening to the telephone conversations between lawyers at a highly regarded Chicago law firm and their clients in Indonesia. The firm, Mayer Brown, has remained publicly silent about the revelations, as has its client, the…